Fan In Attic Ice Dam

Next a fan in the attic can help keep the cool air found in other area s of the attic circulating around to help counteract the heat and moisture coming up from below heating up the sheathing which is one of the main causes of ice dams.

Fan in attic ice dam. If you push hot air out of your attic more hot air from inside your home will just rush in and take its place. If your fan duct has loose insulation or it vents into the attic the warm air may create a warm spot risking an ice dam. Attic ventilation is required by code but it s not an ice dam elixir. Ice dams and attic fan.

Attic ventilation is required by code but it s not an ice dam elixir. Ventilation during the winter helps to reduce moisture as well as keeps attics dry and at an even temperature. Originally posted by slstech. A third component to ice dams is attic ventilation.

As long as attic air leaks are sealed and insulation is sufficient only small amount of ventilation are needed to keep the attic space cold. Proper attic ventilation can prevent ice dams. Although setting up fans in your attic will expel hot air they won t help you prevent ice dams. The warm spots on the roof melt snow and the meltwater flows down to colder areas freezes and forms a dam.

As long as attic air leaks are sealed and insulation is sufficient only small amount of ventilation are needed to keep the attic space cold.